ETSI TS 122 174 V6.2.0 (2003-03) Technical Specification Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); Push service; Stage 1 (3GPP TS 22.174 version 6.2.0 Release 6) R GLOBAL SYSTEM FOR MOBILE COMMUNICATIONS 3GPP TS 22.174 version 6.2.0 Release 6 1 ETSI TS 122 174 V6.2.0 (2003-03) Reference DTS/TSGS-0122174v620 Keywords GSM, UMTS ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16 Siret N° 348 623 562 00017 - NAF 742 C Association à but non lucratif enregistrée à la Sous-Préfecture de Grasse (06) N° 7803/88 Important notice Individual copies of the present document can be downloaded from: http://www.etsi.org The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, the reference version is the Portable Document Format (PDF). 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TIPHONTM and the TIPHON logo are Trade Marks currently being registered by ETSI for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. ETSI 3GPP TS 22.174 version 6.2.0 Release 6 2 ETSI TS 122 174 V6.2.0 (2003-03) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http://webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI 3rd Generation Partnership Project (3GPP). The present document may refer to technical specifications or reports using their 3GPP identities, UMTS identities or GSM identities. These should be interpreted as being references to the corresponding ETSI deliverables. The cross reference between GSM, UMTS, 3GPP and ETSI identities can be found under http://webapp.etsi.org/key/queryform.asp . ETSI 3GPP TS 22.174 version 6.2.0 Release 6 3 ETSI TS 122 174 V6.2.0 (2003-03) Contents Intellectual Property Rights................................................................................................................................2 Foreword.............................................................................................................................................................2 Foreword.............................................................................................................................................................4 Introduction........................................................................................................................................................4 1 Scope........................................................................................................................................................5 2 References................................................................................................................................................5 3 Definitions and abbreviations...................................................................................................................5 3.1 Definitions..........................................................................................................................................................5 3.2 Abbreviations.....................................................................................................................................................6 4 Overview of the Push Service..................................................................................................................6 5 Requirements............................................................................................................................................7 5.1 General...............................................................................................................................................................8 5.2 Provisioning.......................................................................................................................................................8 5.3 Subscription........................................................................................................................................................8 5.4 Addressing and Routing.....................................................................................................................................9 5.5 Delivery..............................................................................................................................................................9 5.6 Service Management........................................................................................................................................10 6 Security...................................................................................................................................................10 7 Privacy....................................................................................................................................................10 8 Access rules............................................................................................................................................11 9 Charging.................................................................................................................................................11 10 Push Subscription Profile Information...................................................................................................12 11 Roaming.................................................................................................................................................12 12 Barring of the Push Service....................................................................................................................12 Annex A (informative): Change history...............................................................................................13 History..............................................................................................................................................................14 ETSI 3GPP TS 22.174 version 6.2.0 Release 6 4 ETSI TS 122 174 V6.2.0 (2003-03) Foreword This Technical Specification has been produced by the 3rd Generation Partnership Project (3GPP). The contents of the present document are subject to continuing work within the TSG and may change following formal TSG approval. Should the TSG modify the contents of the present document, it will be re-released by the TSG with an identifying change of release date and an increase in version number as follows: Version x.y.z where: x the first digit: 1 presented to TSG for information; 2 presented to TSG for approval; 3 or greater indicates TSG approved document under change control. y the second digit is incremented for all changes of substance, i.e. technical enhancements, corrections, updates, etc. z the third digit is incremented when editorial only changes have been incorporated in the document. Introduction The Push Service introduces a means to transmit push data from a push initiator to a push recipient (e.g. a UE) without a previous user action. The push concept, as provided by the SMS teleservice, has been very successful in the GSM second generation, both for text messaging (for user viewing) and for other unstandardized data to the SIM (as a building block used for OTA and other purposes). This TS introduces the Push Service as a generalization of existing network capabilities plus the development of new capabilities. The Push Service should therefore be understood as a building block (network capability), which can be used for new services, both public and private, in 3GPP. In the normal client/server model, a client requests a service or information from a server, which then responds in transmitting information to the client. This is known as the "pull" technology, the user pulls information from the content provider. The World Wide Web is a typical example of pull technology, where a user enters a URL (the request) that is sent to a server and the server answers by sending a Web page (the response) to the user. In contrast to this there is also the "push" technology where there is no explicit request from the user before the content provider (push initiator) initiates an information transfer to a user. Another way of saying this is that whereas "pull" transaction of information are always initiated from the user, "push" transactions are content provider initiated. The welcome message received after registration with a visited network whilst roaming is an example of information transfer that has been initiated without a request from the user. Typically, a user signs up with the push initiator and defines their interest, volume of information acceptable and other factors in the push subscription profile. As information becomes available that satisfies the user"s push subscription profile, the push initiator delivers it to the user using the Push Service. The Push service may be used to implement high level services such as IP multimedia services, MMS, etc., and new services including public safety, government, corporate IT, transfer of push data to machines and devices, in addition to infotainment type services. Another common use for push services is the delivery of notification from e.g. MMS to the user while the user has the option of "pulling" the actual push data from the push initiator. The PLMN Push function provides the push data to the user agent in the UE. The user agent interprets and presents the push data to a person, device or machine using the UE. NOTE: The requirements of services such as streaming, conversational services and broadcast are independent from push. Therefore they are not considered appropriate for inclusion here. Push will be available for use in appropriate applications of all high level services. ETSI 3GPP TS 22.174 version 6.2.0 Release 6 5 ETSI TS 122 174 V6.2.0 (2003-03) 1 Scope This Technical Specification defines the Stage 1 description of the Push Service and is the set of requirements that shall be supported for the provision of push, seen primarily from the subscriber"s, service providers" and delivery network points of view. This TS includes information applicable to network operators, service providers, terminal and network manufacturers. It is of use to manufacturers and organisations which have devices or machines benefiting by availability of push service. This TS contains the core requirements for the Push Service, for operator and external Push Initiators, which are sufficient to provide a complete service capability and service capability feature. This TS defines the requirements for the Push Service to enable delivery of push data, including such functionality as: • Transfer of push data from a Push Initiator to a Push Recipient • Latency and Priority classes, • Definition of handling of undeliverable push data. 2 References The following documents contain provisions which, through reference in this text, constitute provisions of the present document. • References are either specific (identified by date of publication, edition number, version number, etc.) or non-specific. • For a specific reference, subsequent revisions do not apply. • For a non-specific reference, the latest version applies. In the case of a reference to a 3GPP document (including a GSM document), a non-specific reference implicitly refers to the latest version of that document in the same Release as the present document. [1] 3GPP TS 21.133: "3G security; Security threats and requirements". [2] 3GPP TR 21.905: "Vocabulary for 3GPP Specifications". [3] 3GPP TS 22.240: "Service requirements for 3GPP Generic User Profile (GUP); Stage 1". 3 Definitions and abbreviations Definitions and abbreviations used in the present document are listed in TR 21.905 [2]. For the purposes of this document the following definitions and abbreviations apply: 3.1 Definitions Push Data: data sent by the push initiator to the push recipient, of a format known to the receiver (push recipient), and not otherwise defined by the push service. PLMN: the 3GPP network that receives the push data from the push initiator and ensures the delivery of push data to the push recipient. The delivery of the push data may involve other networks. Push function: the function in the PLMN that receives the Push Data from the Push initiator. The push function is responsible for delivering the push data to the Push recipient. ETSI 3GPP TS 22.174 version 6.2.0 Release 6 6 ETSI TS 122 174 V6.2.0 (2003-03) Push initiator: the entity that originates push data and submits it to the push function for delivery to a Push recipient. A Push initiator may be e.g. an application providing value added services. Push recipient: the entity that receives the push data from the Push function and processes or uses it. This may include the UE with which the PLMN communicates with, the user agent with the application level address, and the device, machine or person which uses the push data. A Push recipient is controlled by an individual user . Push service: a service capability offered by the PLMN. The Push Service is initiated by a Push Initiator in order to transfer push data (e.g. data, multimedia content) from the Push Initiator to the Push Recipient without a previous user action. The Push Service could be used as a basic capability or as component of a value added service. Push User agent: is any software or device associated with a Push recipient that interprets Push Data to the user. This may include textual browsers, voice browsers, search engines, machine or device interface software, etc. Push Subscription Profile: a set of parameters indicating the Push recipient"s settings and preferences for the Push Service. 3.2 Abbreviations For the purposes of this document the following abbreviations apply: URL – Uniform Resource Locator. 4 Overview of the Push Service The overview of push is followed by a summary of the relationships among the entities involved (operators, users, push recipients and push initiators). NOTE: these are functional descriptions: multiple functions may, depending on business arrangements, be performed by a single entity. User, Device, Or PLMN Push Machine function Push Push Recipient Initiator Push Service Figure 1: Push Service Overview The Push Service is a service whereby the Push Initiator sends push data through a Push Server to a Push Recipient, without interaction from the Push Recipient. ETSI 3GPP TS 22.174 version 6.2.0 Release 6 7 ETSI TS 122 174 V6.2.0 (2003-03) The typical mode of operation is as follows: • A Push Recipient (e.g. user, receiving device like a meter) explicitly or implicitly subscribes to a set of value added services offered by various Push Initiators and allow these Push Initiators to send it push data that meet the Push Recipient"s configured criteria. (This configured criteria is part of the Push user profile.) • A Push Initiator identifies information matching the criteria set by the Push Initiator and package it up into the push data • The Push Initiator delivers the push data to the Push function, identifying the Recipient"s address, and optionally priority, delivery time parameters, etc. • The Push function takes the responsibility of delivering the push data, optionally following the priority and delivery time parameters, to the Push Recipient and for providing feedback to the Push Initiator regarding delivery of the push data if requested by the Push Initiator. Key characteristics of the Push Service include: • The Push Initiator may, but is not required to deal with the specifics of the wireless transport, selection of appropriate bearers, out-of-coverage or roaming issues, and other wireless network anomalies. These are all managed by the Push Service and hence can be optimised at the network level rather than being handled by all applications. Using an available bearer the push service offers as many capabilities that are available to delivery of the push data following the requested push services requested by the push initiator. • The push initiator shall be provided with a means to query the push server for a specific recipient"s push user profile subject to privacy considerations. • The push server shall not change the push data (contents). Any transformations that the Push Server provides shall be compliant with user privacy requirements as defined in the push subscriber profile. • The push service shall be able to handle user groups (i.e. have the ability to target a certain group of push recipients). • The push service is capable of supporting asynchronous communication between a Push Initiator and the push recipient on a wireless device. • The privacy of the user is important and the introduction of the push services should in no way result in unwanted information "spam" being sent to mobile users. The Push data could contain: • Application specific data exchanged between a server and its client e.g. ERP, CRM, Field Service management, m- commerce transaction data or a meter reading • Provisioning or configuration control data The entities shown in Figure 1 are Push Initiator, Push Server (PLMN) and the Push Recipient. The Push Initiator may be outside the Operators network and hence will require well-defined relationships amongst them. For example, a Push Initiator can be within the Operator domain (e.g. an operator portal) or an external VASP. A Push Recipient (e.g. a User) will need to be part of the Operators network and will require allowing the network to pass through push data and also subscribing to the Push Initiator to generate the data it wants pushed. To support flexible billing models, it becomes necessary for the Operator to have a defined commercial relationship with the Push Initiator. 5 Requirements The following list gives the high level requirements for the Push service. ETSI 3GPP TS 22.174 version 6.2.0 Release 6 8 ETSI TS 122 174 V6.2.0 (2003-03) 5.1 General The Push Service shall allow a Push Initiator (which may be external to the PLMN) to initiate delivery of push data to the Push recipient. It shall be possible to deliver push data to the push recipient without any user intervention, subject to settings in the push subscription profile. The Push Initiator may interrogate the push subscription profile, if available, in order to establish the user preference related to the Push Service. • The push mechanism shall be efficient in the use of network resources and terminal resources. • It shall be possible to support Push Service independently over CS (including CS data and SMS), PS domains or IMS. • NOTE: Operators should be able to choose which of these options they use to deliver Push services, and it should be possible to use these options independently from each other. E.g. delivery over the PS domain would allow operators who are not planning to introduce IMS and SMS to offer Push Services. • It shall be possible to deploy Push Services independently of other services defined by 3GPP. • The quality of service delivery shall be able to include time-sensitive as well as reliable delivery choices • It shall be possible to use all available access networks (e.g. GERAN, UTRAN,). • It shall be possible for the Push Initiator to specify a bearer for the Push Service, as a default the push service shall identify the bearer. The Push Initiator may, however, require certain grade of service for delivery, e.g. speed of delivery or delivery acknowledgement. 5.2 Provisioning The operator shall be able to provision a user or organisation-user (e.g. a subscriber or a VASP) with the Push Service. The provision may include usage of the Push Service as a Push initiator, as a Push recipient or both. The provision may be: - general: where the service is made available to all user or organisation-users (subject to compatibility restrictions enforced) without prior arrangements being made with the operator; - pre-arranged: where the service is made available to an individual user or organisation-user only after the necessary arrangements have been made with the operator. If the user is provisioned with the Push Service as a Push initiator he may use the Push Service in order to transfer push data to the Push Recipient, subject to settings in the push subscription profile of the Push Recipient. If the user is provisioned with the Push Service as a Push recipient he may use the Push Service in order to receive push data from a Push initiator. The push subscription profile parameters (user"s settings and preferences) are managed by the user or the operator on behalf of the user. The operator shall be able to withdraw the provision of the Push service. Withdrawal may be general or pre-arranged. NOTE: Provisioning with – or subscription to – value added services, that make use the Push service are out of scope of this specification. NOTE : the concept of organisation user may apply to GUP and if so will not be duplicated here. 5.3 Subscription The usage of the Push Service to deliver push data from a Push Initiator to a Push Recipient requires as a precondition either an explicit or implicit subscription to the Push Service Explicit Push Subscription: ETSI 3GPP TS 22.174 version 6.2.0 Release 6 9 ETSI TS 122 174 V6.2.0 (2003-03) A subscriber subscribes to the Push Service together with the Push service provider, i.e. the home PLMN operator. Home PLMN Push service providers may then use the Push service to deliver content to the subscriber. Implicit Push Subscription: A Value added service provider shall be able to subscribe to the Push Service on behalf of a subscriber to a value added service provided by this VASP. From a Push service point of view the subscriber becomes a push recipient. From now on the Value added service provider shall be able to use the Push Service capabilities to deliver content to this particular subscriber, i.e. the push recipient. The Push service subscription is valid for the subscriber to receive push data from the VASP that has subscribed to the Push service as long as the subscription is valid. 5.4 Addressing and Routing It shall be possible to uniquely identify push recipients. It shall be possible for push recipients to uniquely identify push initiators. The addressing model shall include addresses of the device (e.g. IP address, SIP-URI, MSISDN) and application level addressing (i.e. user agents). The addressing model shall be compatible with Internet specifications when applicable. It shall be possible to deliver push data to a push recipient with a dynamically allocated IP address. The Push service shall be able to deliver a push data to a push recipient that does not have an IP address currently assigned. Both telecom and internet numbering and addressing schemes shall be supported. It shall be possible to address push recipients without allocating E.164 numbers. 5.5 Delivery The PLMN may set restrictions including maximum size of Push data. The Push Service may offer classes of priority and service delivery. When offered this shall include support for the following: • Delivery time constraints (timing window, i.e. allow the push initiator to specify "deliver after" and "deliver before" parameters) • Requested delivery priority (different priorities dependent on for example push initiator, or allowing the push initiator to specify the desired priority) • If neither delivery time nor priority is set then a single attempt shall be made to deliver the push data without unnecessary delay. • The push service shall be able to send a delivery report to the push initiator, which includes information about a specific submission"s final outcome (delivered, expired, etc.). The report is sent only if the push initiator requested it in the initial push submission or has requested it for all push submissions. • It shall be possible to deliver push data both in an acknowledged and an un-acknowledged manner between the push service and the push recipient • It shall be possible for the push initiator to request that only one delivery attempt is made. In case the push recipient declines a specific instance of push data , it shall be provided with means to indicate whether the push service is allowed to re-send it or not. In the case that classes of priority and service delivery are not offered an attempt to deliver push data to the push recipient shall be made without unnecessary delay. ETSI